Of one-fourth to



f5 -position within its frame.

UNITED 'STATES PATENT Critican.

j'wAitrRRr DUNCAN, oF CHiCAGo,.ILLI Nois, AssieNoR or CNR-FOURTH yTo TREUNION RRAss MANUFACTURING COMPANY, on sAMn PLACE.

SPRING-HINGE.

SPECIFICTIONformng part of Letters Patent No. 291,169, dated January 1,1884.

' Application filed September 1S, 1893. (Model.)

l'b'aZ 7,071,077@ it may concern.- Be itvknown that I, WALTER DUNCAN, Aacitizen of theUnited States, and a residentof 1 Chicago, in the .countyof Cook and State of Illinois, have invented certain new and usefulImprovements in Spring-Hinges; and I do hereby declare the following tobe afull, clear, 4and exact description of the same, reference vbeinghad to the accompanying drawings, formroing a part of thisspecification.

My invention vrelates to improvements in that class of double-actingspring-hinges which are so constructed f as to permit of the opening ineither direction of the door or gate to '1 5 which they are applied; andmy improvements,

have for their objects, mainly, to provide animproved arrangement ofparts whereby the tension of the coiled hinge-springs can be conven-4iently and effectively changed and adj usted to 2o suit the differencein weight or size of the door or gate to which they are applied, 'andalso to ,furnish means whereby the alignment of the lhinge parts can bereadily adjusted, in order j, `to bring the door as it closes to theproper I attain such objects by the construction and arrangement ofrparts illustrated in the accompanying drawings, in whichv Y Figure l isa perspective view of my improved hinge complete. Fig. 2is an elevationpartly in section ofthe same. Fig. 3 is a horizontal section at line xm. Fig. 4 is a bottom plan of the upper fixed plate or eye of the hinge.Fig. 5 is a perspective view of the 3 5 tubular upper pintle of thehinge.' Fig. Gis a horizontal section at line x x. Fig. 7 is aperspective view of the lower pintle of thev hinge and its washer forreceiving the lower end of the spring. Fig. 8 is a top plan of the 4olower fixed plate or eye of the hinge.

Similar letters of reference indicate like parts in the several views.

In the accompanying drawings I illustrate my improvements applied tothat form of double-acting hinges in which a single axiallyarrangedcoiled spring is employed to close the hinge, the arrangement being suchthat the opening of the door in one direction will contract or compressthe upper portion of the 5o spring, and the opening of the door in theother direction will contract the lower portion of the spring, the lowerend of the spring in the one case remaining stationary and the upper endin other case.

Referring to the drawings, A represents the upper, and B the lowerstationary leaf or eye of the hinge that is secured to the jamb of thedoor.

C is the movable leaf of the hinge, having suitable plate portion forattach-ment to the 6o door or gate, and provided with pivot-eyes C C2,and a hollowed portion, C3, for receiving and housing the coiled springD. The pintle Aor spindle by which the upper fixed eye or plate, A, andthe pivoteye C of the movable 65 plate C are hinged together consists ofa tubular spindle, E, having a projecting lug or spline, e, confinedwithin a curved recess, a;

in the eye A.. AXially within this tubular spindle E is arranged acylindrical stem, F, hav- 7o ing at its lowerv end a head, f, for theattachment of the upper end of the coiled spring D, andat its upper enda cap or casing, F', surrounding the enlarged head E of the tubu-larspindle E, as clearly indicated in Fig. 2. The cap F is provided with aseries of radial holes or slots, f, by means of which it is turned toadjust the tension of the spring D, and a-series of holes, f2, in linewith a series of radial holes, c', in the enlarged head E', so that the8o two portions E F can be locked to the required adjustment by alocking pin or screw, f3, pass ing into one of the series of holes. rIhepurpose of the curved recess a is to permit of a free movement of thelug c in a movement of the hinge member C to the right, and to hold itstationary in the movement of said member t0 the left by the lug ecoming in contact with the projecting face c.

a2 is a hole or opening into the recess a, to 9o permit of theintroduction of a rod or pin to engage the lug e and hold the tubularspindle E stationary while the tension of the spring is being adjusted.

a is a radial slot through the eye part A595 into the recess c, for thedownward passage of the lug e in putting the hinge together.

Gis the pintle or spindle by means of which the lower hinge orpivot-eye, C2, of the member C, and pivot-eye ofthe fixed-hinge memberB, Ion

are journaled together. This spindle is held from rotating` in the lowermember by having its end squared, as shown, or by means of a set-screw,or by being rigidly keyed therein, as desired or found most convenient.

H is a collar arranged loosely around the upper end of the pintle G, andhaving suitable provision for the attachment of the lower end ofthecoiled spring D, as shown in Fig. 2. On the under side of this collar isformed stoplugs L h', engaging respectively against the abutment, face,or offset e of the movable member C, and the stop-lug or spline r/ ofthe pintle G, the arrangement being such that a movement of the collaris permitted when the hinge-member is moved to the left, with aconsequent eompression or contraction of thelower portion ofthe spring,a movement of said collar to the right being` prevented by its lug l1.coming in Contact with the lng or splinef/ upon the fixed pintle G. (SeeFigs. 6 and 7.) \Vith the construction of parts as above described, themovement to contract or compress the spring will be from the top, inmoving the door-plate of the hinge tothe right, the lower end of thespring being held stationary, and from the bottom in moving thedoor-plate of the hinge to the left, the upper end of the spring in thiscase being held stationary. rIhe holding of the lower end of the springin moving the hinge-plate C tothe right is effected by the lug h of thecollar H, to which the lower end ofthe spring is attached, abuttingagainst the stop-lug g ofthe fixed pintle G, while the holding oftheupper end of the spring in moving the hinge-plate C to the left iseffected by the lug or spline e of the upper spindle, E F, to which theupper end of the spring is attached, abutting against the affixedabutmentface a of the Iixed member A.

Heretofore great diiiieulty and ineonven ience have been met with in nothaving the door to close properly in its frame. rIhis is initially ducto imperfect or uneven setting of the hinge and subsequently by wear ofthe parts. To overcome these difiiculties and compensate for anyirregularities that may occur in the manufacture of the hinge, I providethe abutmentfaces c c', against which the lug e, or a continuat-ionthereof, and the lug l1y of the collar H usually abut, with set-screwsI, the points of which will then form the abutments, which can be soadjusted as to take up all lost motion and thereby cause the door tocome to a stop in propel.' position within its frame.

-1 p earner Having thus fully described my said invention, what I claimas new, and desire to secure by Letters Patent, is*

l. In a spring-hinge of the class described, the hinge-pintle providedwith a` stop lng or spline, in combination with the movable memberprovided with an adjustable abutmentscrew, as described, and for thepurpose set forth.

2. In a spring-hinge of the class described, the combination of themovable and fixed members with a pintle or spindle composed of a tubularportion, Il, provided with a stop-lug, c, and a stem portion, F,connected to the operating-spring, with means for adjusting the parts EF in relation to each other, substantiall r as described, and for thepurpose set forth.

3. In a spring-hinge of the class described, the combination of thecollar H, having lugs h h, stationary pintle G, having stop-lugg, andmovable member G, having abutment-offset c', as described, and for thepurpose set forth.

4. A spring-hinge consisting of fixed member A, having curved slot a inits pivot-eye, :nembn B, having fixed pintle G, in combination with themovable member C, having adjustable abutment-screws I, and the pintle orspindle E, having stop-lug e, as described, and for the purpose setforth.

5. In a spring-hinge having its pintle formed of atubular stem, E,havinga limited movement in the fixed eye of the hinge, and a stem, F,attached to the spring, and adjustably secured to the stem E by a seriesof radial slots, dft, and locking-pinf, substantially as described, andfor the purpose set forth.

6. In a spring-hinge of the form described, the fixed eye A, providedwith a hole or opening, ai, comn'lunicating with the curved recess a, asdescribed, and for the purpose set forth.

7. In a spring-hinge of the form described, the fixed eye A, providedwith a radial slot, a, for the passage ofthe lug c ofthe hinge-pintle,as herein described, and for the purpose set forth.

Rolznn'r Brnxs, H. D. SniLLnv.

